 at any rate
 at any rate  with a probability of error less than
 with a probability of error less than  , per block of a length approximately proportional to
 , per block of a length approximately proportional to  and with a computational decoding complexity which is asymptotically proportional to
 and with a computational decoding complexity which is asymptotically proportional to  when
 when  is large. The decoding scheme presented in this paper is based on a two-cycle iteration of a decoding procedure which has been described in an earlier paper [1 ].
 is large. The decoding scheme presented in this paper is based on a two-cycle iteration of a decoding procedure which has been described in an earlier paper [1 ].